Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Fedora 24: 2017-a8dc348834 Critical: pcre Buffer Overflow and JIT Crash

fedora
Calendar Grey February 22, 2017
Scroller Fedora
Fedora's recent PCRE update enhances system security by tackling vulnerabilities in multi-line pattern matching, JIT compilation crashes, and buffer overflow issues
This release fixes pcregrep multi-line matching with --only-matching option, a crash when JIT-compiling some patterns (CVE-2017-6004) and a possible buffer overflow when formatting...

Summary

PCRE, Perl-compatible regular expression, library has its own native API, but

a set of wrapper functions that are based on the POSIX API are also supplied

in the libpcreposix library. Note that this just provides a POSIX calling

interface to PCRE: the regular expressions themselves still follow Perl syntax

and semantics. Detailed change log is provided by pcre-doc package.

Update Information:

This release fixes pcregrep multi-line matching with --only-matching option, a crash when JIT-compiling some patterns (CVE-2017-6004) and a possible buffer overflow when formatting a pcregrep error message.

Topics%20covered

Topics Covered

security advisory buffer overflow critical Fedora pcre JIT crash

Change Log

References


[ 1 ] Bug #1425365 - CVE-2017-6004 pcre: Out-of-bounds read in compile_bracket_matchingpath function https://bugzilla.redhat.com/show_bug.cgi?id=1425365

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade pcre' at the command line. For more information, refer to the dnf documentation available at https://dnf.readthedocs.io/en/latest/command_ref.html

Severity
critical
Lowest
Low
Medium
High
Critical

Name: pcre
Product: Fedora 24
Version: 8.40
Release: 2.fc24
URL:
Summary: Perl-compatible regular expression library

Topics%20covered

Topics Covered

security advisory buffer overflow critical Fedora pcre JIT crash

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.